1.The competent authorities may designate liaison bodies which may communicate directly with each other.
2.Any institution of a Member State, and any person residing or staying in the territory of a Member State, may make application to the institution of another Member State, either directly or through the liaison bodies.
3.Decisions and other documents emanating from an institution of a Member State and intended for persons residing or staying in the territory of another Member State may be communicated directly by registered letter with acknowledgement of receipt.